LLC service ratings · Delaware
3 Best LLC Services in Delaware (2026)
1. Mainstay Filing: best for formation, agent and annual tax on a single line
$199 a year plus the state fee, $309 due at checkout
Mainstay Filing is rated first: $199 a year includes the formation filing, the registered agent and the annual tax; renewal is $199.
Mainstay files the Annual LLC Tax at each renewal. The state's line is $400 every year, due annual alternative-entity tax due on or before June 1, with $200 added if late, and Mainstay passes that fee on at cost.
On three-year sums Mainstay is $200 above DE Registered Agent.org; the wider coverage justifies that gap in the rating.
What you get
- LLC formation filed on your behalf
- Registered agent service for the whole year
- Annual tax prepared and filed
- EIN application
Pros
- EIN application is in the package
- Delaware's fee goes through at cost
- $199 on renewal with no extras
- One $199 yearly line that includes the annual tax
Trade-offs
- Agent renews $100 a year above DE Registered Agent.org
2. DE Registered Agent.org: best for a Delaware LLC that will not expand
$199 to form, $99 a year for the agent, state fee extra
DE Registered Agent.org is rated second: Delaware formation at $199 beyond the state's amount, first agent year included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
The Annual LLC Tax sits outside its published prices; you file it with Delaware yourself every year.
What you get
- Delaware formation filed for you
- A year of registered agent service at the start
Pros
- $199 service fee and the filing fee
- $99 per year to keep the agent
- The first registered agent year is covered
Trade-offs
- The Annual LLC Tax is not on its price list
- EIN application billed at $99
3. Delaware Registered Agent.ai: best for staying local in Delaware
$199 to form, $99 a year for the agent, state fee extra
Delaware Registered Agent.ai is rated third: Delaware formation at $199 beyond the state's amount, first agent year included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
The Annual LLC Tax sits outside its published prices; you file it with Delaware yourself every year.
DE Registered Agent.org and Delaware Registered Agent.ai list identical amounts and plan features, so the ratings are close and either is a fair pick.
What you get
- Delaware formation filed for you
- A year of registered agent service at the start
Pros
- $199 service fee and the filing fee
- Year-two agent amount: $99
- First-year registered agent service is included
Trade-offs
- The Annual LLC Tax is not on its price list
- EIN application billed at $99
The 3 ratings summarized
| Line | Service | Rating | Service fee | Year two | Best for | Open |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | 9.6 | $199 | $199/yr | Formation, agent and annual tax on one line | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | DE Registered Agent.org | 9.4 | $199 | $99/yr | A Delaware-only LLC counting every dollar | Visit DE Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Delaware Registered Agent.ai | 9.1 | $199 | $99/yr | A Delaware-only LLC counting every dollar | Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy. |
Delaware LLC service amounts for 2026: year one, renewal and three-year sum
| Service | Year one | Year two | Year three | Three-year sum | Annual LLC Tax filed by them |
|---|---|---|---|---|---|
| Mainstay Filing | $199 | $199 | $199 | $597 | Yes |
| DE Registered Agent.org | $199 | $99 | $99 | $397 | No |
| Delaware Registered Agent.ai | $199 | $99 | $99 | $397 | No |
Why the order looks like this
Inclusions per price decided the order in Delaware. Of the rating, 27% is cost over years one to three, 27% is inclusions per price and 46% is renewal price and terms, fit with state rules and price clarity.
Delaware requires a report annually at $400, with $200 added for a late one. Mainstay's amount covers that filing while DE Registered Agent.org's does not, so coverage outweighed DE Registered Agent.org's lower three-year sum.
Each criterion and its weight is listed on How we rank.
Delaware LLC formation: official amount and form
Filing the Certificate of Formation of a Limited Liability Company costs $110, paid to the Delaware Secretary of State. Each service here passes that amount through at cost, added to its own.
Ongoing items for a Delaware LLC
Plan on the Annual LLC Tax every year; the date is annual alternative-entity tax due on or before June 1. State amount: $400. Late: $200 extra. Every LLC must name a registered agent with an in-state street address.
Delaware LLC service: your questions
What are the total costs to form an LLC in Delaware?
$110 to the state plus $199 to the service.
What is the formation document called?
It is the Certificate of Formation of a Limited Liability Company, lodged with the Delaware Secretary of State.
Is a registered agent a requirement for a Delaware LLC?
Yes. Delaware wants a registered agent on file at all times, with a physical street address in the state.
Which filings recur each year for a Delaware LLC?
One line item: the Annual LLC Tax, every year, due annual alternative-entity tax due on or before June 1, fee $400.
Is the EIN application a separate charge?
Mainstay Filing includes it in the yearly price. DE Registered Agent.org and Delaware Registered Agent.ai charge $99 separately. At the IRS the EIN itself costs nothing.
Which LLC service holds the top rating in Delaware?
Mainstay Filing, as the Delaware formation, the registered agent and the annual tax are bundled into $199 a year.
Source lines
- Delaware yearly filing: Recurring obligation, official source (ledger date October 2026)
- Delaware yearly filing: Recurring obligation, official source (ledger date October 2026)
- Delaware yearly filing: HB 400, official source (ledger date October 2026)
- Delaware report due date (ledger date August 2026)
- 6 Del. C. § 18-201 (ledger date August 2026)
- Delaware registered agent statute (ledger date October 2026)
- Mainstay Filing, Delaware service page: amounts read November 12, 2026
- DE Registered Agent.org, pricing and service pages: amounts read November 12, 2026
- Delaware Registered Agent.ai, pricing and service pages: amounts read November 12, 2026